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Finding the Fourth Proportional to 5,481.64, 7,564.65 and 3,123.82

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Solution

The fourth proportional to 5,481.64, 7,564.65 and 3,123.82 is: 4,310.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,481.64 : 7,564.65 = 3,123.82 : x
  2. Step 2: Convert to fraction form
    5,481.64/7,564.65 = 3,123.82/x
  3. Step 3: Cross multiply
    5,481.64x = 7,564.65 × 3,123.82
  4. Step 4: Simplify right side
    5,481.64x = 23,630,604.96
  5. Step 5: Solve for x
    x = 23,630,604.96/5,481.64
  6. Step 6: Final answer
    x = 4,310.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.